Head to head
Bockmann Portax K vs Brian James A Transporter (A4)
The Bockmann Portax K is rated 400kg heavier gross.
Last reviewed 13 September 2026
Key differences
- Gross weight: the Bockmann Portax K is rated 400kg heavier gross.
Specifications side by side
| Bockmann Portax K | Brian James A Transporter (A4) | |
|---|---|---|
| Gross weight | 2400kg | 2,000kg to 3,000kg depending on variant |
| Payload | 1265kg | - |
| Internal length | 3560mm | - |
| Internal width | 1750mm | - |
| Internal height | 2350mm | - |
| Bed | - | 3.7m x 1.8m up to 5.0m x 2.0m depending on variant |
| Brakes | - | Braked, tandem axle |
Sources: Bockmann Portax K, Brian James A Transporter (A4). Figures vary by model year and options, so check with the supplier before you commit.
Buy or hire the Portax K if...
- you want one that is rated 400kg heavier gross
A mid-range Portax with a front unloading ramp, bought by owners who value being able to lead a horse out the front rather than reversing it out. It sits below the Big Portax models in size and price.
Listed by
- Böckmann UK Trailers & Horseboxes - Cinderford, Littledean
Buy or hire the A Transporter (A4) if...
One of the most common car trailers in Britain, bought by trade and private owners for moving road cars, project cars and small vans. The reason it sells is the spread of bed length and gross weight combinations, which lets you match the trailer to the tow car rather than the other way round.
Listed by
- Fieldfare Trailer Centre - Salisbury
- Bicester Trailer Centre - Bicester
- Trek-Trailers Three Counties - Hereford
Common questions
What is the difference between the Bockmann Portax K and the Brian James A Transporter (A4)?
The Bockmann Portax K is rated 400kg heavier gross. The Bockmann Portax K is a aluminium 2-horse trailer with front exit; the Brian James A Transporter (A4) is a open flatbed car transporter, twin axle.
Can I tow the Bockmann Portax K or the Brian James A Transporter (A4) on a car licence?
Yes, as far as the licence goes. Both are rated at or under 3,500kg gross, and a car (B) licence has covered towing up to 3,500kg since 16 December 2021. Your car still has to be rated to tow the loaded weight - check the handbook or the VIN plate.
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